public class _Main {
    public static void main(String[] args) {
        test1(-1);
        test2(2);
    }
    private static void test1(int a) {
        assert a > 0;
        System.out.println(a);
    }
    private static void test2(int a) {
        assert a > 0 : "a gt 0";
        System.out.println(a);
    }
}
